if语句
缩进要保持一致
1 if 1 == 1: 2 print('hello') 3 if 2 == 2: 4 print('world') 5 else: 6 print('python')
elif
1 inp = input('请输入等级') 2 3 if inp == 'h': 4 print('high') 5 elif inp == 'm': 6 print('mid') 7 else: 8 print('low') 9 print('final')
pass什么也不做
1 #!/usr/bin/env python 2 #-*- coding:utf8 -*- 3 if 1 == 1: 4 pass 5 else: 6 print('1 == 1')
数据类型:
1 #字符串加法 2 n1 = "hello " 3 n2 = "world" 4 n3 = n1 + n2 5 print(n3) 6 7 #字符串乘法 8 n4 = 10 * n1 # n4 = hello hello hello ... 9 print(n4) 10 11 #数字 12 a1 = 13 13 a2 = 10; 14 15 a3 = a1 + a2 16 print(a3) 17 18 a4 = 2 ** 4 #2的4次方 19 print(a4) 20 21 a5 = a1 % 2 22 a6 = a1 / 2 23 a7 = a1 // 2 24 25 print(a5) # 1 26 print(a6) # 6.5 27 print(a7) # 6